6 Apr
2005
6 Apr
'05
11:52 a.m.
From: Alfons Adriaensen <fons.adriaensen(a)alcatel.be>
Date: 2005/04/06 on PM 01:00:45 GMT
To: "The Linux Audio Developers' Mailing List"
<linux-audio-dev(a)music.columbia.edu>
Ämne: Re: [linux-audio-dev] FOSS-tools for realtime audio analysis?
You may mave a look at JAAA, (JACK and ALSA Audio Analyser). This is
a
realtime 'technical' (rather than musical)
spectrum analyser,
designed
to make accurate measurements. It will also generate
sines and white
Gaussian noise. It's at
<http://users.skynet.be/solaris/linuxadio>
You will also need some small shared libs available from the same
place.
I'm considering some additional functionality, and if you have any
specific requirements I'd be interested to know.
Thanks! Actually, it's a friend of mine interested in something like
this. One thing that I know he was curious about was if it would be
possible to develop some kind of test-case for external hardware, which
could give an indication of whether something is wrong with it or not.
From just taking a peek at it, I'm getting the
impression that this is
mainly a graphical tool (which is really cool). Anyway,
he's not afraid
of hacking if this is what he's looking for. Are features like these
anything you've considered/already implemented/interesting?
I am also working on a Room Impulse Response
measurement system using
a sine sweep as the stimulus. First release expected in a about two
months.
--
FA
6 Apr
6 Apr
12:26 p.m.
New subject: [linux-audio-dev] FOSS-tools for realtime audio analysis?
On Wed, Apr 06, 2005 at 01:52:45PM +0000, mathias_lundgren(a)bredband.net wrote:
From just taking a peek at it, I'm getting the
impression that this is
mainly a graphical tool (which is really cool). Anyway, he's not afraid
of hacking if this is what he's looking for. Are features like these
anything you've considered/already implemented/interesting?
It's graphical, but designed to get accurate numerical results.
I wrote it to test sound card and other hardware: frequency response, noise,
distortion etc., and also to analyse real sounds for one of my other projects
(Aeolus).
Things I'm considering to be added are memories (e.g. to compare traces),
a spectrogram display (similar to the one made by carmen), input from sound
files with 'transport' control, and direct output to PNG files.
Concerning the latter, does anyone know of a library that would convert an
X11 pixmap (or the contents of a window) to PNG ?
--
FA
5:23 p.m.
New subject: [linux-audio-dev] FOSS-tools for realtime audio analysis?
Alfons Adriaensen wrote:
Concerning the latter, does anyone know of a library
that would convert an
X11 pixmap (or the contents of a window) to PNG ?
libMagick: http://www.imagemagick.org/
Readily available on most Linux distros.
HTH,
Albert
--
Dr. Albert Gr"af
Dept. of Music-Informatics, University of Mainz, Germany
Email: Dr.Graef(a)t-online.de, ag(a)muwiinfa.geschichte.uni-mainz.de
WWW: http://www.musikwissenschaft.uni-mainz.de/~ag
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Alfons Adriaensen -
mathias_lundgren＠bredband.net